1 => The disorder is placed on the map based on its association with a gene, but the underlying defect is not known
2 => The disorder has been placed on the map by linkage; no mutation has been found
3 => The molecular basis for the disorder is known; a mutation has been found in the gene
4 => A contiguous gene deletion or duplication syndrome, multiple genes are deleted or duplicated causing the phenotype
| Gene Symbol | Chromosomal Location | Gene MIM number | Mapping Method | Phenotype | Phenotype MIM number | Phenotype Mapping Key |
| CAMK2A | 5q32 | 114078 | H, R, REc | Mental retardation, autosomal dominant 53, 617798 (3) | 617798 | 3 |
| CAMK2A | 5q32 | 114078 | H, R, REc | ?Mental retardation, autosomal recessive 63, 618095 (3) | 618095 | 3 |